What airlines fly to Louisville?

American Airlines, Delta and Southwest are the top three most popular airlines that fly to Louisville from Portland, Maine according to our data. American Airlines is the first choice among our users, with 53% of people opting to fly with this airline when traveling to Louisville. Keep in mind that there are 7 different airlines that fly to Louisville on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Portland Airport to Louisville Intl Airport?

Prices for flights from Portland Airport to Louisville Intl Airport refresh daily.

How many operators does momondo search for flights from Portland Airport to Louisville Intl Airport?

There are 2 operators available for flights from Portland Airport to Louisville Intl Airport as of December 2025.

How old do you have to be to fly from Portland Airport to Louisville Intl Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Louisville Intl Airport.

What documentation or ID do you need to fly to Louisville Intl Airport?

The travel and health documents you'll need for your trip to Louisville Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Louisville Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$281 Cheap Flights from Portland to Louisville in 2025/26

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Find the cheapest flights from Portland, Maine to Louisville

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Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 11:44 am

PWM

SDF

5h 44m1 stop

6:00 am - 11:20 am

SDF

PWM

5h 20m1 stop

$317Delta

Wed, Jan 21 - Wed, Jan 28

6:00 am - 11:44 am

PWM

SDF

5h 44m1 stop

7:50 am - 5:16 pm

SDF

PWM

9h 26m2 stops

$322Delta

Wed, Jan 21 - Wed, Jan 28

6:00 am - 2:36 pm

PWM

SDF

8h 36m2 stops

7:00 am - 5:16 pm

SDF

PWM

10h 16m2 stops

$327Delta

Wed, Jan 21 - Wed, Jan 28

6:00 am - 11:47 am

PWM

SDF

5h 47m1 stop

6:00 am - 11:18 am

SDF

PWM

5h 18m1 stop

$329Delta

Tue, Feb 17 - Mon, Feb 23

6:00 am - 11:47 am

PWM

SDF

5h 47m1 stop

3:33 pm - 12:18 am

SDF

PWM

8h 45m2 stops

$334Delta

Tue, Feb 17 - Mon, Feb 23

3:05 pm - 11:23 pm

PWM

SDF

8h 18m1 stop

9:50 am - 2:31 pm

SDF

PWM

4h 41m1 stop

$339United Airlines

Sat, Jan 17 - Tue, Jan 20

4:10 pm - 10:30 pm

PWM

SDF

6h 20m1 stop

5:35 am - 2:31 pm

SDF

PWM

8h 56m2 stops

$344United Airlines

Sat, Jan 17 - Tue, Jan 20

8:40 am - 10:30 pm

PWM

SDF

13h 50m2 stops

2:10 pm - 11:27 pm

SDF

PWM

9h 17m2 stops

$349United Airlines

Sat, Jan 17 - Tue, Jan 20

12:10 pm - 6:13 pm

PWM

SDF

6h 03m1 stop

7:50 am - 12:03 pm

SDF

PWM

4h 13m1 stop

$352Delta

Wed, Feb 4 - Sun, Feb 8

12:43 pm - 7:39 pm

PWM

SDF

6h 56m2 stops

7:50 am - 12:03 pm

SDF

PWM

4h 13m1 stop

$357Delta

Wed, Feb 4 - Sun, Feb 8

Delta flights from Portland, Maine to Louisville

Our best Delta deals on Portland, Maine to Louisville flight tickets

Delta

Jan 21

PWM6:00 amPortland

5h 44m

1 stop

SDF11:44 amLouisville Intl

Jan 28

SDF6:00 amLouisville Intl

5h 20m

1 stop

PWM11:20 amPortland

$317

Find similar

Delta

Jan 21

PWM6:00 amPortland

5h 44m

1 stop

SDF11:44 amLouisville Intl

Jan 28

SDF7:50 amLouisville Intl

9h 26m

2 stops

PWM5:16 pmPortland

$322

Find similar

Delta

Jan 21

PWM6:00 amPortland

8h 36m

2 stops

SDF2:36 pmLouisville Intl

Jan 28

SDF7:00 amLouisville Intl

10h 16m

2 stops

PWM5:16 pmPortland

$327

Find similar

United Airlines flights from Portland, Maine to Louisville

Our best United Airlines deals on Portland, Maine to Louisville flight tickets

United Airlines

Jan 17

PWM3:05 pmPortland

8h 18m

1 stop

SDF11:23 pmLouisville Intl

Jan 20

SDF9:50 amLouisville Intl

4h 41m

1 stop

PWM2:31 pmPortland

$339

Find similar

United Airlines

Jan 17

PWM4:10 pmPortland

6h 20m

1 stop

SDF10:30 pmLouisville Intl

Jan 20

SDF5:35 amLouisville Intl

8h 56m

2 stops

PWM2:31 pmPortland

$344

Find similar

United Airlines

Jan 17

PWM8:40 amPortland

13h 50m

2 stops

SDF10:30 pmLouisville Intl

Jan 20

SDF2:10 pmLouisville Intl

9h 17m

2 stops

PWM11:27 pmPortland

$349

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Portland, Maine to Louisville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Wed 1/21

6:00 am-11:44 am

1 stop5h 44m

Louisville Intl

Wed 1/28

6:00 am-11:20 am

1 stop5h 20m

$317

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Wed 1/21

6:00 am-11:44 am

1 stop5h 44m

Louisville Intl

Wed 1/28

7:50 am-5:16 pm

2 stops9h 26m

$322

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Wed 1/21

6:00 am-2:36 pm

2 stops8h 36m

Louisville Intl

Wed 1/28

7:00 am-5:16 pm

2 stops10h 16m

$327

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Tue 2/17

6:00 am-11:47 am

1 stop5h 47m

Louisville Intl

Mon 2/23

6:00 am-11:18 am

1 stop5h 18m

$329

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Tue 2/17

6:00 am-11:47 am

1 stop5h 47m

Louisville Intl

Mon 2/23

3:33 pm-12:18 am

2 stops8h 45m

$334

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Sat 1/17

3:05 pm-11:23 pm

1 stop8h 18m

Louisville Intl

Tue 1/20

9:50 am-2:31 pm

1 stop4h 41m

$339

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Sat 1/17

4:10 pm-10:30 pm

1 stop6h 20m

Louisville Intl

Tue 1/20

5:35 am-2:31 pm

2 stops8h 56m

$344

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Sat 1/17

8:40 am-10:30 pm

2 stops13h 50m

Louisville Intl

Tue 1/20

2:10 pm-11:27 pm

2 stops9h 17m

$349

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Wed 2/4

12:10 pm-6:13 pm

1 stop6h 03m

Louisville Intl

Sun 2/8

7:50 am-12:03 pm

1 stop4h 13m

$352

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Wed 2/4

12:43 pm-7:39 pm

2 stops6h 56m

Louisville Intl

Sun 2/8

7:50 am-12:03 pm

1 stop4h 13m

$357

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Portland, Maine to Louisville

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Louisville?

If you are unable to visit Louisville during the month of June, then departing from Portland, Maine during the month January is also very affordable. Most momondo users find prices during this month for around $331.

What is the cheapest day to depart on your flight to Louisville?

On average, the least expensive day to fly to Louisville from Portland, Maine is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $386. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Portland, Maine to Louisville on a Tuesday will generally be more expensive and average around $503. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Louisville?

Our data shows that the cheapest Portland, Maine to Louisville flights are usually those with departure times in the morning. Our users have found flights to Louisville in the morning for as low as $417. In the afternoon is when there is more demand to fly to Louisville, so prices are often more expensive at around $526 per ticket.

When to book flights from Portland, Maine to Louisville

Are you open to changing your travel dates? Check out the ideal times to fly from Portland, Maine to Louisville according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Portland, Maine to Louisville (PWM to SDF) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to Louisville

Fastest flight time	4h 29m
Direct flights	None

The fastest flight from Portland, Maine to Louisville takes 4h 29m

There are no direct flights from Portland, Maine to Louisville. There are no popular flight routes from Portland, Maine to Louisville.

Search flight deals

How far is Portland to Louisville Intl by plane?
A flight from Portland to Louisville Intl will travel around 888.5 mi. By plane, this route typically takes 4h 29m.
When did momondo last update prices for flights from Portland Airport to Louisville Intl Airport?
Prices for flights from Portland Airport to Louisville Intl Airport refresh daily.
How many operators does momondo search for flights from Portland Airport to Louisville Intl Airport?
There are 2 operators available for flights from Portland Airport to Louisville Intl Airport as of December 2025.
How old do you have to be to fly from Portland Airport to Louisville Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Louisville Intl Airport.
What documentation or ID do you need to fly to Louisville Intl Airport?
The travel and health documents you'll need for your trip to Louisville Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Louisville Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Portland, Maine to Louisville?
momondo data reveals that the most frequently booked airline on the route from Portland, Maine to Louisville is American Airlines, representing 62% of all bookings. The subsequent popular airline is Delta at 38%.

Best airlines flying from Portland, Maine to Louisville

Compare and see reviews for airlines that fly from Portland, Maine to Louisville with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $248	Free Cancellation	Rating 7.9 8,013 reviews		Search Delta flights
American Airlines	PriceFrom $270	Free Cancellation	Rating 7.2 11,062 reviews		Search American Airlines flights

French Lick

Elizabethtown

West Baden Springs

Bardstown

Jeffersonville

Shepherdsville

New Albany

Corydon

Elizabeth

Charlestown

Brandenburg

Springfield

Georgetown

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Louisville?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Portland to Louisville for you.

Can I find flights from Portland to Louisville with flexible booking policies on momondo?

momondo does allow users to show only those flights to Louisville from Portland which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Portland to Louisville?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Portland to Louisville.

I’m not ready to book a flight from Portland to Louisville right now. Can momondo alert me if prices change?

Price alerts on flights to Louisville from Portland are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.